if let Some(exit) = exit {
debug!(slog_scope::logger(), "adapter exit code"; "exit_code" => exit);
} else {
debug!(slog_scope::logger(), "adapter wast terminated by signal");
debug!(slog_scope::logger(), "adapter was terminated by signal");
}
for line in stderr.lines() {
debug!(slog_scope::logger(), "adapter stderr"; "stderr" => line);